摘要
全矢谱技术是同源信息融合技术的一种,能够有效的融合同一个截面两个传感器通道的信号信息,并且准确的提取机械故障的特征信息。信号信息不同的时间和频率的能量的密度或者强度可以通过时频分析方法描述,然而Wigner高阶谱是Wigner-ville分布在高阶谱领域的扩展,能够非常有效的分析时变非高斯信号,但是它仅仅只能用来处理单通道信号信息,现针Wigner对高阶谱的这一缺点与全矢谱分析方法相结合,提出一种新的分析方法—矢Wigner高阶切片分析法,给出它的定义和算法,运用仿真实验和实例验证。
Vector spectrum technology is a homology information fusion technology,which can effectively integrate the channel signal with a cross section of two sensors and accurately extract the characteristics of mechanical failure.However,signal information of different time and frequency energy density or strength can be described through the time-frequency analysis method,higher order spectral is the distribution of the expansion in the field of higher order spectral,which can very effectively analyze time-varying non-Gaussian signal,but it can only be used to deal with the single-channel signal information.In order to overcome this shortcoming of the Wigner higher-order spectra,it combines the vector spectrum and Wigner higher order spectral,proposing a new full-vector Wigner higher order slice spectra analysis,and giving its definition and algorithms.The results show that the full-vector Wigner higher-order,which overcomes the shortness of the Wigner higher-order spectrum with single channel.
出处
《机械设计与制造》
北大核心
2013年第4期82-84,共3页
Machinery Design & Manufacture
基金
河南省高等学校青年骨干教师资助项目(2010GGJS-020)
河南省教育厅自然科学研究计划(2010B460014)
